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pyroxylin |
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pyroxylin (pīrŏk`sĭlĭn), partially nitrated cellulose (see nitrocellulose nitrocellulose, nitric acid ester of cellulose (a glucose polymer). It is usually formed by the action of a mixture of nitric and sulfuric acids on purified cotton or wood pulp. ..... Click the link for more information. ). It is used in lacquers, plastics, and artificial leathers. Pyroxylin lacquers are made by dissolving pyroxylin in a mixture of volatile solvents and adding a plasticizer and a pigment or dye. Pyroxylin plastics are made by colloiding pyroxylin with large amounts of a plasticizer such as camphor; such plastics (e.g., celluloid) are highly flammable. Collodion collodion (kəlō`dēən), solution of pyroxylin in a mixture of alcohol and ether. ..... Click the link for more information. is a solution of pyroxylin in ether and ethanol. pyroxylin [pə′räk·sə·lən] (organic chemistry) [C12H16O6(NO3)4]xAny member of the group of commercially available nitrocelluloses that are used for properties other than their combustibility; the term is commonly used to identify products that are principally made from nitrocellulose, such as pyroxylin plastic or pyroxylin lacquer. Also known as collodion cotton; soluble guncotton; soluble nitrocellulose. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Grave, who was the first to use pyroxylin smokeless powder as rocket fuel (1915), G. |
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